<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>错误提示页！</title>
  <style>
    html,body{height:100vh}
    html:before,html:after,body:before,body:after{content:'';background:linear-gradient(#203075,#233581);border-radius:50%;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}
    html:before,body:before{background:linear-gradient(#233581,#203075)}
    html{background:linear-gradient(#203075,#233581);overflow:hidden}
    html:before{height:105vmax;width:105vmax;z-index:-4}
    html:after{height:80vmax;width:80vmax;z-index:-3}

    body{display:flex;justify-content:center;align-items:center;color:#FFF;font-family:'Varela Round',Sans-serif;text-shadow:0 30px 10px rgba(0,0,0,0.15)}
    body:before{height:60vmax;width:60vmax;z-index:-2}
    body:after{height:40vmax;width:40vmax;z-index:-1}
    .main{text-align:center;z-index:5}
    p{font-size:18px;margin-top:0}
    h1{font-size:145px;margin:0}
    button{background:linear-gradient(#EC5DC1,#D61A6F);padding:0 12px;border:none;border-radius:20px;box-shadow:0 30px 15px rgba(0,0,0,0.15);outline:none;color:#FFF;font:400 16px/2.5 Nunito,'Varela Round',Sans-serif;text-transform:uppercase;cursor:pointer}
    .bubble{background:linear-gradient(#EC5DC1,#D61A6F);border-radius:50%;box-shadow:0 30px 15px rgba(0,0,0,0.15);position:absolute}
    .bubble:before,.bubble:after{content:'';background:linear-gradient(#EC5DC1,#D61A6F);border-radius:50%;box-shadow:0 30px 15px rgba(0,0,0,0.15);position:absolute}
    .bubble:nth-child(1){top:15vh;left:15vw;height:22vmin;width:22vmin}
    .bubble:nth-child(1):before{width:13vmin;height:13vmin;bottom:-25vh;right:-10vmin}
    .bubble:nth-child(2){top:20vh;left:38vw;height:10vmin;width:10vmin}
    .bubble:nth-child(2):before{width:5vmin;height:5vmin;bottom:-10vh;left:-8vmin}
    .bubble:nth-child(3){top:12vh;right:30vw;height:13vmin;width:13vmin}
    .bubble:nth-child(3):before{width:3vmin;height:3vmin;bottom:-15vh;left:-18vmin;z-index:6}
    .bubble:nth-child(4){top:25vh;right:18vw;height:18vmin;width:18vmin}
    .bubble:nth-child(4):before{width:7vmin;height:7vmin;bottom:-10vmin;left:-15vmin}
    .bubble:nth-child(5){top:60vh;right:18vw;height:28vmin;width:28vmin}
    .bubble:nth-child(5):before{width:10vmin;height:10vmin;bottom:5vmin;left:-25vmin}</style>
</head>

<body>
<div class="bubble"></div>
<div class="bubble"></div>
<div class="bubble"></div>
<div class="bubble"></div>
<div class="bubble"></div>
<div class="main">
  <h1>Error</h1>
  <p>您访问的页面出错了！</p>
</div>
</body>
</html>
